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'Bathtub ring' points to vast ancient ocean on Mars

Mars may have once held a vast ocean across its northern lowlands, and the clearest clue may not be the faint shoreline ...
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NASA spots glowing blue dunes on the Martian surface

As we delve deeper into the mysteries of the Red Planet, NASA’s Perseverance rover continues to reveal intriguing features on Mars’ surface. Among these are the captivating images of blue sand dunes ...